Java tutorial
/* * DBeaver - Universal Database Manager * Copyright (C) 2010-2016 Serge Rieder (serge@jkiss.org) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License (version 2) * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ package org.jkiss.dbeaver.ui.editors.entity; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.*; import org.eclipse.ui.IEditorInput; import org.eclipse.ui.IEditorSite; import org.eclipse.ui.part.EditorPart; import org.jkiss.dbeaver.utils.GeneralUtils; import java.io.PrintWriter; import java.io.StringWriter; /** * ErrorEditorPartEx */ public class ErrorEditorPartEx extends EditorPart { private IStatus error; private Composite parentControl; public ErrorEditorPartEx(IStatus error) { this.error = error; } public void doSave(IProgressMonitor monitor) { } public void doSaveAs() { } public void createPartControl(Composite parent) { this.parentControl = parent; if (error != null) { createErrorPane(parent); } } public void init(IEditorSite site, IEditorInput input) { setSite(site); setInput(input); setPartName(input.getName()); } public boolean isDirty() { return false; } public boolean isSaveAsAllowed() { return false; } public void setFocus() { parentControl.setFocus(); } public void setPartName(String newName) { super.setPartName(newName); } public void dispose() { super.dispose(); parentControl = null; } private static final String LOG_VIEW_ID = "org.eclipse.pde.runtime.LogView"; //$NON-NLS-1$ boolean showingDetails = false; private Button detailsButton; private Composite detailsArea; private Control details = null; private void createErrorPane(final Composite parent) { Color bgColor = parent.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND); Color fgColor = parent.getDisplay().getSystemColor(SWT.COLOR_LIST_FOREGROUND); parent.setBackground(bgColor); parent.setForeground(fgColor); GridLayout layout = new GridLayout(); layout.numColumns = 3; int spacing = 8; int margins = 8; layout.marginBottom = margins; layout.marginTop = margins; layout.marginLeft = margins; layout.marginRight = margins; layout.horizontalSpacing = spacing; layout.verticalSpacing = spacing; parent.setLayout(layout); Display d = Display.getCurrent(); Label imageLabel = new Label(parent, SWT.NONE); imageLabel.setBackground(bgColor); Image image; switch (error.getSeverity()) { case IStatus.ERROR: image = d.getSystemImage(SWT.ICON_ERROR); break; case IStatus.WARNING: image = d.getSystemImage(SWT.ICON_WARNING); break; default: image = d.getSystemImage(SWT.ICON_INFORMATION); break; } image.setBackground(bgColor); imageLabel.setImage(image); imageLabel .setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_CENTER | GridData.VERTICAL_ALIGN_BEGINNING)); Text text = new Text(parent, SWT.MULTI | SWT.READ_ONLY | SWT.WRAP); text.setBackground(bgColor); text.setForeground(fgColor); text.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); text.setText(error.getMessage()); Composite buttonParent = new Composite(parent, SWT.NONE); buttonParent.setBackground(parent.getBackground()); GridLayout buttonsLayout = new GridLayout(); buttonsLayout.numColumns = 2; buttonsLayout.marginHeight = 0; buttonsLayout.marginWidth = 0; buttonsLayout.horizontalSpacing = 0; buttonParent.setLayout(buttonsLayout); detailsButton = new Button(buttonParent, SWT.PUSH); detailsButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { showingDetails = !showingDetails; updateDetailsText(); } }); detailsButton.setLayoutData(new GridData(SWT.BEGINNING, SWT.FILL, false, false)); updateDetailsText(); detailsArea = new Composite(parent, SWT.NONE); detailsArea.setBackground(bgColor); detailsArea.setForeground(fgColor); GridData data = new GridData(GridData.FILL_BOTH); data.horizontalSpan = 3; data.verticalSpan = 1; detailsArea.setLayoutData(data); detailsArea.setLayout(new FillLayout()); parent.layout(true); } private void updateDetailsText() { if (details != null) { details.dispose(); details = null; } if (showingDetails) { detailsButton.setText(IDialogConstants.HIDE_DETAILS_LABEL); Text detailsText = new Text(detailsArea, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL | SWT.MULTI | SWT.READ_ONLY | SWT.LEFT_TO_RIGHT); detailsText.setText(getDetails()); detailsText.setBackground(detailsText.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND)); details = detailsText; detailsArea.layout(true); } else { detailsButton.setText(IDialogConstants.SHOW_DETAILS_LABEL); } } private String getDetails() { if (error.getException() != null) { return getStackTrace(error.getException()); } return GeneralUtils.getStatusText(error); } private String getStackTrace(Throwable throwable) { StringWriter swriter = new StringWriter(); PrintWriter pwriter = new PrintWriter(swriter); throwable.printStackTrace(pwriter); pwriter.flush(); pwriter.close(); return swriter.toString(); } }